During September 2025, Lin Sijia focused on performance and localization enhancements across the zed-industries/claude-code-acp and payloadcms/payload repositories. Lin optimized production build size by moving development-only type definitions to devDependencies in JavaScript and TypeScript projects, reducing runtime footprint for zed-industries/claude-code-acp. In payloadcms/payload, Lin improved the Chinese localization by refining translation strings, correcting inconsistencies, and enhancing spacing between alphanumeric and Chinese text for better readability. These contributions leveraged skills in dependency management, front-end development, and internationalization. The work demonstrated a practical approach to both codebase efficiency and user experience, with depth in both technical and linguistic problem-solving.